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I am calling blktrace tool from my Perl code. The output of this tool gets saved on the current directory. From my perl code I want to go to "/tmp/xyz" directory. I know on terminal i can achieve it by "cd /tmp/xyz". But then how to do it from my perl code ??

Actually through my perl code I am generating some files and I want to store them at a particular location in "/tmp" directory. So how can I achieve that ??

hi... How can I create a directory named "/tmp/abc/xyz" from my perl code. Thanks..

Hi again, I have a GUI which accepts the value of the scheduler. This value is then saved in a variable. So, how can i use that variable in echo command. Kindly help...

Thnk u vry vry much :) It worked :)

And as i run again and again its pid changes every time. I can find the pid by using system("pidof -s blktrace");, but then how can i use this information further to stop blktrace execution.

Thnx a ton :) But is there any way if I can replace $pid_of_blktrace by the process name ??

Hi everyone, I am executing "blktrace" on my /dev/sda. In my application i have made a GUI which lets user to choose when he wants to stop "blktrace" execution. Now how can achieve it ?? Also how can i pass "Ctrl+C" to terminal from a perl script ?? Kindly help..

How to apply color to a label's text, a background color and a background image to a window while making a GUI using Perl/tk. And also how can we place a label at a desired location. i.e. desired x-y coordinate

thnx alot :-) it was really helpful...

How can we change the scheduler from "cfq" (by default) to "noop" through code. Basically I am working with Perl. I know how we can change it manually "echo noop > /sys/block/sda/queue/scheduler" but how to do it via code.